<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      let name = 'John';
      function makeWorker() {
        // let name = 'Pete';
        return function () {
          console.log(name);
        };
      }
      // create a function
      let work = makeWorker();

      // call it
      work(); // 会显示什么？
    </script>
  </body>
</html>
